[GR-20446] Update IO#write to accept multiple arguments

PullRequest: truffleruby/2981

CHANGELOG.md

@@ -21,6 +21,7 @@ Compatibility:
 * Add `Thread.ignore_deadlock` accessor (#2453).
 * Allow `Hash#transform_keys` to take a hash argument (@ccocchi, #2464).
 * Add `Enumerable#grep{_v}` optimization for `Regexp` (#2453).
+* Update `IO#write` to accept multiple arguments (#2501).
 
 Performance:
 

spec/tags/core/io/write_tags.txt

@@ -1,2 +1 @@
 slow:IO.write on a FIFO writes correctly
-fails:IO#write accepts multiple arguments

src/main/ruby/truffleruby/core/io.rb

@@ -2375,8 +2375,12 @@ def ungetc(obj)
     nil
   end
 
-  def write(data)
-    data = String data
+  def write(*data)
+    data = if data.size > 1
+             data.map { |d| Truffle::Type.rb_obj_as_string(d) }.join
+           else
+             Truffle::Type.rb_obj_as_string(data[0])
+           end
     return 0 if data.empty?
 
     ensure_open_and_writable